drm/amdgpu: add amdgpu_bo_vm bo type

Add new BO subclass that will be used by amdgpu vm code.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index b382e94..9615ba9 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -670,6 +670,38 @@ int amdgpu_bo_create_user(struct amdgpu_device *adev,
        *ubo_ptr = to_amdgpu_bo_user(bo_ptr);
        return r;
 }
+
+/**
+ * amdgpu_bo_create_vm - create an &amdgpu_bo_vm buffer object
+ * @adev: amdgpu device object
+ * @bp: parameters to be used for the buffer object
+ * @vmbo_ptr: pointer to the buffer object pointer
+ *
+ * Create a BO to be for GPUVM.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+
+int amdgpu_bo_create_vm(struct amdgpu_device *adev,
+                       struct amdgpu_bo_param *bp,
+                       struct amdgpu_bo_vm **vmbo_ptr)
+{
+       struct amdgpu_bo *bo_ptr;
+       int r;
+
+       /* bo_ptr_size will be determined by the caller and it depends on
+        * num of amdgpu_vm_pt entries.
+        */
+       BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo_vm));
+       r = amdgpu_bo_create(adev, bp, &bo_ptr);
+       if (r)
+               return r;
+
+       *vmbo_ptr = to_amdgpu_bo_vm(bo_ptr);
+       return r;
+}
+
 /**
  * amdgpu_bo_validate - validate an &amdgpu_bo buffer object
  * @bo: pointer to the buffer object

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index a44779d..07687a1 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -44,6 +44,7 @@
 #define AMDGPU_AMDKFD_CREATE_SVM_BO    (1ULL << 62)
 
 #define to_amdgpu_bo_user(abo) container_of((abo), struct amdgpu_bo_user, bo)
+#define to_amdgpu_bo_vm(abo) container_of((abo), struct amdgpu_bo_vm, bo)
 
 struct amdgpu_bo_param {
        unsigned long                   size;
@@ -125,6 +126,12 @@ struct amdgpu_bo_user {
 
 };
 
+struct amdgpu_bo_vm {
+       struct amdgpu_bo                bo;
+       struct amdgpu_bo                *shadow;
+       struct amdgpu_vm_pt             entries[];
+};
+
 static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
 {
        return container_of(tbo, struct amdgpu_bo, tbo);
@@ -272,6 +279,9 @@ int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
 int amdgpu_bo_create_user(struct amdgpu_device *adev,
                          struct amdgpu_bo_param *bp,
                          struct amdgpu_bo_user **ubo_ptr);
+int amdgpu_bo_create_vm(struct amdgpu_device *adev,
+                       struct amdgpu_bo_param *bp,
+                       struct amdgpu_bo_vm **ubo_ptr);
 void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
                           void **cpu_addr);
 int amdgpu_bo_create_shadow(struct amdgpu_device *adev,